package org.linys.util;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

import net.sf.json.JsonConfig;
import net.sf.json.processors.JsonValueProcessor;

public class DateJsonValueProcessor implements JsonValueProcessor {  
    public static final String DEFAULT_DATE_PATTERN = "yyyy-MM-dd";  
    private DateFormat dateFormat;  
  
    /** 
     * 构造方法. 
     * 
     * @param datePattern 日期格式 
     */  
    public DateJsonValueProcessor(String datePattern) {  
        try {  
            dateFormat = new SimpleDateFormat(datePattern);  
        } catch (Exception ex) {  
            dateFormat = new SimpleDateFormat(DEFAULT_DATE_PATTERN);  
        }  
    }  
  
    public Object processArrayValue(Object value, JsonConfig jsonConfig) {  
        return process(value);  
    }  
  
    public Object processObjectValue(String key, Object value,  
        JsonConfig jsonConfig) {  
        return process(value);  
    }  
  
    private Object process(Object value) {  
        return dateFormat.format((Date) value);  
    }  
}  